On the subject of bubbles, I was told by the folks at ISpikeit that Injectasol was not made for microwave use. Of course I had already bought 5gal. It does bubble up something fierce and also settles badly. However it is great plastic if you just mix it up and heat,cool heat again. Can't complain about the results just more time consuming. I have a gallon of Calhoun from Bear and it heats and pours perfectly. I've had good and bad from several different places, must just come from inconsistency in the manufacturing or even storage issues. If you are patient you can work through the issues.